12156110693 has 4 divisors (see below), whose sum is σ = 12548243328. Its totient is φ = 11763978060.

The previous prime is 12156110671. The next prime is 12156110741. The reversal of 12156110693 is 39601165121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39601165121 = 7 ⋅5657309303.

It is a cyclic number.

It is not a de Polignac number, because 12156110693 - 2⁸ = 12156110437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12156110653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196066271 + ... + 196066332.

It is an arithmetic number, because the mean of its divisors is an integer number (3137060832).

Almost surely, 2^12156110693 is an apocalyptic number.

It is an amenable number.

12156110693 is a deficient number, since it is larger than the sum of its proper divisors (392132635).

12156110693 is an equidigital number, since it uses as much as digits as its factorization.

12156110693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392132634.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 12156110693 in words is "twelve billion, one hundred fifty-six million, one hundred ten thousand, six hundred ninety-three".